即:Normalized_image=(image-mean)/std. MINIST是(1,28,28)不是RGB的三维,只有一维的灰度图数据,所以不是[0.5,0.5,0.5],而是[0.5] transform=transforms.Compose([transforms.ToTensor(),transforms.Normalize(mean=[0.5],std=[0.5])])train_data=datasets.MNIST(root="./data/",transform=transform,train=Tru...